CN111549673A - Appearance modification equipment for concrete cast-in-place box girder - Google Patents
Appearance modification equipment for concrete cast-in-place box girder Download PDFInfo
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- CN111549673A CN111549673A CN202010412363.1A CN202010412363A CN111549673A CN 111549673 A CN111549673 A CN 111549673A CN 202010412363 A CN202010412363 A CN 202010412363A CN 111549673 A CN111549673 A CN 111549673A
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- operating platform
- connecting beam
- girder
- place box
- winch
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides appearance modification equipment for a concrete cast-in-place box girder, which comprises a main girder, a carrying device for carrying the main girder, a first connecting part detachably connected to the left side of the main girder, and a second connecting part detachably connected to the right side of the main girder, wherein the main girder, the first connecting part and the second connecting part surround a containing cavity for containing the concrete cast-in-place box girder. The motor-driven carrier loader is detachably connected below the main beam, so that the main beam can be conveniently moved in the construction process. Through the left and right sides detachable at the girder be connected with first connecting portion and second connecting portion, be convenient for be under construction to the bridge both sides, also improved the security when constructing simultaneously. Can dismantle first connecting portion and second connecting portion when the construction finishes, be convenient for transport and accomodate.
Description
Technical Field
The invention belongs to the technical field of appearance modification of concrete cast-in-place box girders for highway and railway engineering construction, and particularly relates to appearance modification equipment of a concrete cast-in-place box girder.
Background
At present, the bridge of most highway, municipal administration and railway engineering projects is mainly formed by a reinforced concrete cast-in-place box girder, but the common quality problems of the bridge appearance, local honeycomb pitted surface, slab staggering and the like are common. Therefore, the concrete cast-in-place box bridge needs to be further modified, and the modification work is generally performed uniformly after the construction of the main structure of each bridge is completed. However, when the appearance modification work is carried out, an operation platform is not arranged below the bridge, and the conventional method is to carry out the modification work by adopting a crane to carry people or adopting a mode of reserving holes on the main structure of the bridge and adopting a temporary fixed hanging basket as the operation platform, or adopting the fixed hanging basket between two opposite cantilever type ladder stands. CN201820484684.0 discloses a device for trimming a bridge body by fixing a basket between two cantilever ladders. The device has poor safety, is more troublesome when the local bridge needs to be decorated and the decoration device is not easy to operate, and has poor adaptability to bridges with different heights.
The mode of carrying people by the crane is not economical, the price of the crane or the shift fee is high, and the mode is limited by the height of the bridge, namely the mode can only be used on the appearance of the bridge with low height and flat lower part for passing vehicles. If the form of reserving the hole on the bridge major structure and temporarily fixing the hanging basket is adopted, the operation is complex, the working face is very difficult to move, and the reserved hole is required to be repaired. The appearance modification equipment for the concrete cast-in-place box girder provided by the invention has the advantages of simple structure, low manufacturing cost, no limitation of the height of the bridge, suitability for bridges with different heights and widths, no need of pre-burying holes in the bridge, easy and quick moving working face and high safety in manual operation.
Disclosure of Invention
In order to solve the technology, the invention provides appearance modification equipment for a concrete cast-in-place box girder, which is characterized by comprising a main girder, a carrying device, a first connecting part detachably connected to the left side of the main girder and a second connecting part detachably connected to the right side of the main girder.
Preferably, the main beam is formed by connecting a plurality of bailey frames.
Preferably, the Bailey frames are formed by connecting type 321 Bailey pieces and type 90 brackets.
Preferably, the structure of the first connecting part is the same as that of the second connecting part, and the first connecting part comprises a first connecting beam detachably connected with the main beam, a first operating platform rotatably connected with the first connecting beam, a second connecting beam detachably connected with the first operating platform, and a second operating platform rotatably connected with the second connecting beam;
the first connecting beam is connected with a first stretching device, and the first stretching device is connected with a first operating platform;
and the second connecting beam is connected with a second stretching device, and the second stretching device is connected with a second operating platform.
Preferably, the first stretching device is a first winch, the first winch comprises a first steel wire rope, a first fixed pulley is mounted on the first operating platform, and the first steel wire rope is connected to the first operating platform through the first fixed pulley;
the second stretching device is a second winch which comprises a second steel wire rope, a second fixed pulley is mounted on the second operation platform, and the second steel wire rope is connected to the second operation platform through the second fixed pulley.
Preferably, the tonnage of the first winch is 10 tons.
Preferably, the tonnage of the second winch is 5 tons.
Preferably, the first stretching device is a third winch and a fourth winch which are arranged in parallel respectively, the third winch comprises a third steel wire rope for outputting power, a third fixed pulley is installed on the first operating platform, the third steel wire rope is connected to the first operating platform through the third fixed pulley, the fourth winch comprises a fourth steel wire rope for outputting power, a fourth fixed pulley is installed on the first operating platform, and the fourth steel wire rope is connected to the first operating platform through the fourth fixed pulley.
Preferably, the third winch and the fourth winch have tonnage of 10 tons.
Preferably, the second stretching device is a fifth winch and a sixth winch which are arranged in parallel respectively, the fifth winch comprises a fifth steel wire rope for outputting power, a fifth fixed pulley is mounted on the second operation platform, the fifth steel wire rope is connected to the second operation platform through the fifth fixed pulley, the sixth winch comprises a sixth steel wire rope for outputting power, a sixth fixed pulley is mounted on the second operation platform, and the sixth steel wire rope is connected to the second operation platform through the sixth fixed pulley.
Preferably, the tonnage of each of the fifth winch and the sixth winch is 5 tons.
Preferably, the carrying device is a motor-driven carrying cart connected below the main beam, and a plurality of auxiliary wheels are respectively installed below the left side and the right side of the main beam.
Preferably, 3 auxiliary wheels are installed to the below on the left side of the main beam, and 3 auxiliary wheels are installed to the below on the right side of the main beam.
Preferably, a counterweight device is installed on the main beam.
Preferably, the counterweight device is section steel, and the section steel is symmetrically arranged at the lower end of the middle part of the main beam.
Preferably, the section steel is I-shaped steel.
Preferably, the first connecting beam is connected with the main beam through a first pin shaft, the first operating platform is connected with the first connecting beam through a second pin shaft, the second connecting beam is connected with the second operating platform through a third pin shaft, the first winch is connected to the first connecting beam through a first bolt, and the second winch is connected to the second connecting beam through a second bolt.
Preferably, the third winch is connected to the first connecting beam through a sixth bolt, the fourth winch is connected to the first connecting beam through a seventh bolt, the fifth winch is connected to the second connecting beam through an eighth bolt, and the sixth winch is connected to the second connecting beam through a ninth bolt.
Preferably, a first guard rail is detachably mounted on the periphery of the first operating platform, a second guard rail is detachably mounted on the periphery of the second operating platform, and the first guard rail and the second guard rail have the same structure.
The first protective guard comprises a protective guard upright post and a protective guard horizontal rod, one end of the protective guard upright post is of a flange structure, one end of the protective guard upright post, which is provided with the flange structure, is connected with the first operating platform through a third bolt, and the other end of the protective guard upright post is connected with the protective guard horizontal rod.
Preferably, the guardrail horizontal rod is connected with the guardrail upright post through a fifth bolt.
Preferably, the first connecting beam, the first operating platform, the second connecting beam and the second operating platform are all ladder-shaped structures.
Preferably, the first connecting beam, the first operating platform, the second connecting beam and the second operating platform are all welded by 150 × 75 × 8mm square steel.
Preferably, the guardrail upright post is designed by 60 × 40 × 4mm square steel.
Preferably, the horizontal bars of the guardrail are designed by square steel of 50 × 32 × 4 mm.
Preferably, the main beam is connected with the motor vehicle by a fourth bolt.
Preferably, the first connecting beam, the first operating platform, the second connecting beam and the second operating platform have a plurality of different lengths to be selected, and the first connecting beam, the first operating platform, the second connecting beam and the second operating platform with different lengths can be selected according to the size of the bridge to be installed.
Has the advantages that:
according to the invention, the Bailey main beam formed by connecting the Bailey frames is used as the main beam, and the motor vehicle carrier loader is detachably connected below the main beam, so that the main beam can be conveniently moved in the construction process. The lower extreme symmetry at girder middle part installs shaped steel for the counter weight can improve the anti performance of overturning of girder. Through the left and right sides detachable at the girder be connected with first connecting portion and second connecting portion, be convenient for be under construction to the bridge both sides, also improved the security when constructing simultaneously. The first connecting portion are the same with the structure of second connecting portion, and first connecting portion include can dismantle the first tie-beam of being connected with the girder, can select the first tie-beam of different length according to the height of bridge. The first connecting beam is rotatably connected with the first operating platform, and the first operating platforms with different lengths can be selected according to the width of the bridge. The first operating platform is rotatably connected with the second connecting beam, and the second connecting beams with different lengths can be selected according to the height of the bridge. The second connecting beam is rotatably connected with the second operating platform, and the second operating platforms with different lengths can be selected according to the width of the bridge. The appearance modification equipment for the concrete cast-in-place box girder can be suitable for bridges with different heights and widths.
Drawings
Fig. 1 is a schematic overall structural diagram of an embodiment 1 of the present invention in which a first operation platform and a second operation platform are both in a vertical state.
Fig. 2 is an overall structural schematic diagram of embodiment 1 of the present invention in which the first operation platform is in a horizontal state and the second operation platform is in a vertical state.
Fig. 3 is an overall structural schematic diagram of the first operating platform and the second operating platform both in a horizontal state in embodiment 1 of the present invention.
Fig. 4 is an overall structural schematic diagram of embodiment 2 of the present invention in which the first operating platform and the second operating platform are both in a horizontal state.
Fig. 5 is an overall structural schematic diagram of embodiment 3 of the present invention in which the first operating platform and the second operating platform are both in a horizontal state.
Fig. 6 is an overall structural schematic diagram of embodiment 4 of the present invention in which the first operating platform and the second operating platform are both in a horizontal state.
Fig. 7 is a schematic view of a-a sectional structure in fig. 6.
Fig. 8 is a schematic view of a sectional structure B-B in fig. 7.
Fig. 9 is a schematic view of the cross-sectional structure C-C in fig. 9.
1-main beam, 2-motor vehicle, 3-auxiliary wheel, 4-first connecting beam, 5-first winch, 6-first pin shaft, 7-first steel wire rope, 8-second pin shaft, 9-first operating platform, 10-first fixed pulley, 11-first protective guard, 12-protective guard upright post, 13-protective guard horizontal rod, 14-third pin shaft, 15-second connecting beam, 16-second winch, 17-second steel wire rope, 18-fourth pin shaft, 19-second fixed pulley, 20-second protective guard, 21-second operating platform, 22-concrete cast-in-place box beam, 23-first connecting part, 24-second connecting part, 25-section steel, 26-third winch, 27-fourth winch, 28-fifth hoist, 29-sixth hoist.
Detailed Description
The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.
In addition, the starting materials used are all commercially available, unless otherwise specified.
Example 1
The appearance modification equipment for the concrete cast-in-place box girder comprises a main girder 1, wherein the main girder 1 is formed by connecting a plurality of Bailey frames, and each Bailey frame is formed by connecting 321 type Bailey pieces and 90 type supports. The left side of the main beam 1 is detachably connected with a first connecting part 23, and the right side of the main beam is detachably connected with a second connecting part 24. The first connection portion 23 has the same structure as the second connection portion 24. The main beam 1, the first connecting part 23 and the second connecting part 24 enclose a containing cavity for containing the concrete cast-in-place box beam 22. First connecting portion 23 includes first tie-beam 4 of being connected through first round pin axle 6 rotation with girder 1, and first operation platform 9 of being connected through second round pin axle 8 rotation with first tie-beam 4, and second tie-beam 15 of being connected through third round pin axle 14 rotation with first operation platform 9, and second operation platform 21 of being connected through fourth round pin axle 18 rotation with second tie-beam 15. Because be detachable between first tie beam 4, first operation platform 9, second tie beam 15 and the second operation platform 21 and be connected, when the construction finishes, can accomodate its dismantlement, convenient transportation. The first connecting beam 4, the first operating platform 9, the second connecting beam 15 and the second operating platform 21 are all ladder-shaped structures formed by welding 150 x 75 x 8mm square steel, and the ladder-shaped structures are beneficial to the operation of constructors on the upper side and the lower side of the bridge. The first connecting beam 4 is connected with a first stretching device which enables the first operating platform 9 to rotate, and the first stretching device is connected with the first operating platform 9. First stretching device is the first hoist engine 5 of 10 tons for the tonnage, first hoist engine 5 is through first bolted connection on first tie-beam 4, first hoist engine 5 is including the first wire rope 7 of output power, install first fixed pulley 10 on the first operation platform 9, first wire rope 7 is connected to the middle part of first operation platform 9 through first fixed pulley 10, tighten up through first wire rope 7, first operation platform 9 of 5 machine pulling of first hoist engine is rotated, when first operation platform 9 rotates required position, lock first hoist engine 5. According to the needs of construction, can be through first hoist engine 5 with first operation platform 9 pull to required angle, the operation workman operates on first operation platform 9, security when having improved the construction. The second connecting beam 15 is connected with a second stretching device which enables the second operating platform 21 to rotate, and the second stretching device is connected with the second operating platform 21. The second stretching device is a second winch 16 with the tonnage of 5 tons, and the second winch 16 is connected to the first connecting beam 4 through a second bolt. The second winch 16 comprises a second steel wire rope 17 for outputting power, a second fixed pulley 19 is installed on a second operating platform 21, and the second steel wire rope 17 is connected to the middle of the second operating platform 21 through the second fixed pulley 19. By tightening the second wire rope 17, the second winch 16 pulls the second operation platform 21 to rotate, and when the second operation platform 21 rotates to a position required for construction, the second winch 16 is locked. According to the construction requirement, the second operating platform 21 can be pulled to a required angle through the second winch 16, and an operator operates on the second operating platform 21, so that the safety during construction is improved. The lower part of the main beam 1 is connected with the motor vehicle carrier 2 through a fourth bolt. The motor carrier loader 2 can carry the main beam, so that the first connecting part 23 and the second connecting part 24 are driven to move, and the change of the construction position is realized by moving the appearance modification equipment of the concrete cast-in-place box in the construction process. When meeting the pier in the construction process, the first steel wire rope 7 and the second steel wire rope 17 can be loosened, so that the first operating platform 9 and the second operating platform 21 are restored to be in a vertical state and smoothly pass through the pier.
A first guard rail 11 is detachably mounted on the periphery of the first operating platform 9, a second guard rail 20 is detachably mounted on the periphery of the second operating platform 21, and the first guard rail 11 and the second guard rail 20 have the same structure. First rail guard 11 includes guardrail stand 12, the guardrail horizon bar 13 that is connected with guardrail stand 12, and the one end of guardrail stand 12 sets up to the flange structure, and the one end that protection stand 12 was equipped with the flange structure is connected with first operation platform 9 through the third bolt, the installation and the dismantlement of guardrail stand 12 of being convenient for. The other end of guardrail horizontal pole 13 and guardrail stand 12 is connected through the fifth bolt, when the equipment construction finishes, can dismantle guardrail horizontal pole 13 and guardrail stand 12 and accomodate. The guardrail upright post 12 is designed by 60 multiplied by 40 multiplied by 4mm square steel, the guardrail horizontal rod 13 is designed by 50 multiplied by 32 multiplied by 4mm square steel, and the safety of constructors can be ensured by the steel guardrail upright post 12 and the guardrail horizontal rod 13.
Example 2
In this embodiment, only the technical points different from those in embodiment 1 are stated, and the technical features not described in detail in this embodiment are all the same as those in embodiment 1. In the embodiment, 3 auxiliary wheels 3 are installed below the left side of the main beam 1, 3 auxiliary wheels 3 are installed below the right side of the main beam 1, and the concrete cast-in-place box beam appearance modification equipment can be conveniently moved by installing the auxiliary wheels 3.
Example 3
In this embodiment, only the technical points different from those in embodiment 2 are stated, and the technical features not described in detail in this embodiment are all the same as those in embodiment 2. In this embodiment, the lower end of the middle part of the main beam 1 is symmetrically provided with the counterweight device, the counterweight device is the section steel 25, the section steel 25 is used for balancing the appearance modification equipment of the concrete cast-in-place box beam, the overturn resistance of the main beam 1 is improved, and the section steel 1 for balancing weight is made of I-shaped steel.
Example 4
Only the technical points different from those in embodiment 3 are stated in this embodiment, and the technical features not described in detail in this embodiment are all the same as those in embodiment 3. The first stretching means in this embodiment is a third hoist 26 and a fourth hoist 27 respectively arranged in parallel. The third winch 26 includes a third steel wire rope for outputting power, a third fixed pulley is installed on the first operating platform 9, and the third steel wire rope is connected to the first operating platform 9 through the third fixed pulley. The fourth winch 27 includes a fourth steel wire rope for outputting power, a fourth fixed pulley is installed on the first operation platform 9, and the fourth steel wire rope is connected to the first operation platform 9 through the fourth fixed pulley. The third hoist 26 is connected to the first connection beam by a sixth bolt, and the fourth hoist 27 is connected to the first connection beam by a seventh bolt.
The first operating platform 9 is pulled by the third winch 26 and the fourth winch 27, so that the stability of the first operating platform 9 during rotation can be improved, and the safety performance during operation can be improved. The third hoist 26 and the fourth hoist 27 each have a tonnage of 10 tons.
The second stretching device is a fifth winch 28 and a sixth winch 29 which are arranged in parallel respectively, the fifth winch 28 comprises a fifth steel wire rope for outputting power, a fifth fixed pulley is mounted on the second operating platform 21, the fifth steel wire rope is connected to the second operating platform 21 through the fifth fixed pulley, the sixth winch 29 comprises a sixth steel wire rope for outputting power, a sixth fixed pulley is mounted on the second operating platform 21, and the sixth steel wire rope is connected to the second operating platform 21 through the sixth fixed pulley. The fifth winch 28 is connected to the second connection beam by an eighth bolt, and the sixth winch 29 is connected to the second connection beam by a ninth bolt.
The second operating platform 21 is pulled through the fifth winch 28 and the sixth winch 29, so that the stability of the second operating platform 21 during rotation can be improved, the safety performance during operation is improved, and the tonnage of the fifth winch and the tonnage of the sixth winch are both 5 tons.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may modify or change the technical content of the above disclosure into equivalent embodiments with equivalent changes, but all those simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the present invention.
Claims (10)
1. The utility model provides a cast-in-place box girder outward appearance of concrete is decorated equipment which characterized in that, includes girder, carrying device, detachable connects at the left first connecting portion of girder, detachable connects the second connecting portion on girder right side.
2. The appearance modification device for the concrete cast-in-place box girder according to claim 1, wherein the main girder is formed by connecting a plurality of bailey frames.
3. The appearance modification equipment for the concrete cast-in-place box girder according to claim 2, wherein the structure of the first connecting part is the same as that of the second connecting part, and the first connecting part comprises a first connecting beam detachably connected with the main girder, a first operating platform rotatably connected with the first connecting beam, a second connecting beam detachably connected with the first operating platform, and a second operating platform rotatably connected with the second connecting beam;
the first connecting beam is connected with a first stretching device, and the first stretching device is connected with a first operating platform;
and the second connecting beam is connected with a second stretching device, and the second stretching device is connected with a second operating platform.
4. The appearance modification equipment for the concrete cast-in-place box girder according to claim 3, wherein the first stretching device is a first winch, the first winch comprises a first steel wire rope, a first fixed pulley is installed on the first operation platform, and the first steel wire rope is connected to the first operation platform through the first fixed pulley;
the second stretching device is a second winch which comprises a second steel wire rope, a second fixed pulley is mounted on the second operation platform, and the second steel wire rope is connected to the second operation platform through the second fixed pulley.
5. The appearance modification equipment for the concrete cast-in-place box girder according to any one of claims 2 to 4, wherein the carrying device is a motor vehicle connected below a main girder, and a plurality of auxiliary wheels are respectively installed below the left side and the right side of the main girder.
6. A concrete cast-in-place box girder appearance finishing equipment according to any one of claims 2 to 4, wherein a counterweight device is installed on the main girder.
7. The appearance modification device for the concrete cast-in-place box girder according to claim 4, wherein the first connecting beam is connected with the main girder through a first pin shaft, the first operating platform is connected with the first connecting beam through a second pin shaft, the second connecting beam is connected with the second operating platform through a third pin shaft, the first winch is connected with the first connecting beam through a first bolt, and the second winch is connected with the first connecting beam through a second bolt.
8. The appearance modification equipment for the concrete cast-in-place box girder according to any one of claims 3, 4 or 7, wherein a first guard rail is detachably arranged on the periphery of the first operating platform, a second guard rail is detachably arranged on the periphery of the second operating platform, and the first guard rail and the second guard rail have the same structure.
9. The appearance modification device for the concrete cast-in-place box girder according to claim 8, wherein the first guard rail comprises a guard rail upright post and a guard rail horizontal rod, one end of the guard rail upright post is provided with a flange structure, one end of the guard rail upright post provided with the flange structure is connected with the first operating platform through a third bolt, and the other end of the guard rail upright post is connected with the guard rail horizontal rod.
10. A concrete cast-in-place box girder appearance finishing equipment according to any one of claims 3, 4, 7 or 9, wherein the first connecting beam, the first operating platform, the second connecting beam and the second operating platform are all ladder-shaped structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010412363.1A CN111549673A (en) | 2020-05-15 | 2020-05-15 | Appearance modification equipment for concrete cast-in-place box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010412363.1A CN111549673A (en) | 2020-05-15 | 2020-05-15 | Appearance modification equipment for concrete cast-in-place box girder |
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| CN111549673A true CN111549673A (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010412363.1A Pending CN111549673A (en) | 2020-05-15 | 2020-05-15 | Appearance modification equipment for concrete cast-in-place box girder |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069432U (en) * | 1990-03-17 | 1991-01-16 | 江西省交通科研所 | Cantilever hanging bridge-overhaul vehicle |
| CN205934717U (en) * | 2016-08-03 | 2017-02-08 | 安庆市公路管理局 | Movable concrete case roof beam appearance quality overhauls device |
| CN106758808A (en) * | 2017-02-23 | 2017-05-31 | 湖南品智工程技术有限公司 | For the template expanding unit of bridge concrete guardrail slding form operation |
| CN106917353A (en) * | 2017-04-21 | 2017-07-04 | 中交第二航务工程局有限公司 | A kind of open-close type crosses pier box beam maintenance construction trolley and its method of work |
| JP2018084086A (en) * | 2016-11-24 | 2018-05-31 | 三井住友建設株式会社 | Bridge inspection device |
-
2020
- 2020-05-15 CN CN202010412363.1A patent/CN111549673A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069432U (en) * | 1990-03-17 | 1991-01-16 | 江西省交通科研所 | Cantilever hanging bridge-overhaul vehicle |
| CN205934717U (en) * | 2016-08-03 | 2017-02-08 | 安庆市公路管理局 | Movable concrete case roof beam appearance quality overhauls device |
| JP2018084086A (en) * | 2016-11-24 | 2018-05-31 | 三井住友建設株式会社 | Bridge inspection device |
| CN106758808A (en) * | 2017-02-23 | 2017-05-31 | 湖南品智工程技术有限公司 | For the template expanding unit of bridge concrete guardrail slding form operation |
| CN106917353A (en) * | 2017-04-21 | 2017-07-04 | 中交第二航务工程局有限公司 | A kind of open-close type crosses pier box beam maintenance construction trolley and its method of work |
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Application publication date: 20200818 |
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